Clip.



E. HAHN.

CLIP.

APPLICATION HLBD Nov. 18, 1909.

Patented July 12, 1910.

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EMIL HAI-IN, OF ALBION, .MICHIGAN.

CLIP.

Specicaton of Letters Patent.

Patented July 12, 1910.

Application filed November 18, 1909. Serial No. 528,816.

To all 'whom it may concern:

Be it known that I, EMIL HAHN, a citizen of the United States, residing at Albion, in the county of Calhoun and State of Michigan, have invented a new and useful Clip, of which the following is a specification.

This invention relates to springs designed for use in vehicle seats, chairs, beds and the like, particularly to means for attaching the springs to the supporting wires, and has for its principal object to provide a clip that will securely clamp a convolution of the spring to the supporting wire, and will not work loose and permit the spring and supporting wire to become separated under severe conditions of service.

A further object is to provide a clip which will have no projecting terminals to wear through the fabric of the cushion.

A still further object is to provide a clip which may be driven to operative position by a suitable forming die and will not be mutilated or mutilate either the spring or supporting wire when being driven.

The usual form of clip consists of a single length of wire having a straight portion adapted to extend along the convolution of the spring and having terminal loops to embrace the convolution and the supporting wire. The extreme ends of these loops are sometimes disposed in abutting contact with a portion of the loop adjacent the straight lportion of the clip and are sometimes passed ack between the convolution of the spring and the supporting wire. In the former case the terminals are not held in engagement with the straight portion of the clip and so the loop gradually 4opens in the course of time and permits the spring to become entirely disengaged from the supporting wire. In the latter case the impact of the forming die flattens the terminal of the strand forming the loop between the opposed surfaces of the convolution and supporting wire so that the clip is weakened at its most vital point and is rendered unable to properly perform its function under severe conditions of service. My present invention obviates both the above disadvantages by forming the wire at its ends into triangular loops and directing the terminal of the strand forming the loop back over the straight portion of the clip and bending the extremity of the strand over the outer surface of the straight portion.

To attain the above advantages, my invention consists of certain novel details of construction which will be hereinafter more fully described and claimed.

In the accompanying drawing forming part of this specification, Figure l is a plan view of a spring and supporting wire of the cushion showing my improved clip applied thereto. Fig. Q is a transverse sectional view taken on the line A-B of Fig. l. Fig. 3 is a detail perspective view of the clip. Fig. 4 is a fragmentary sectional view taken on the'line C-D of Fig. 1 and showing the securing loop of the clip dotted in initial position.

Referring to the drawing in which like characters of reference designate similar parts in the views shown, l designates a double cone cushion spring of the usual and well known kind and 2 designates the cushion supporting wires.

The clip which forms the subject matter of the 4present invention is formed from a single length of stiif wire and consists of a straight portion 3 adapted to extend along the convolution of the spring l. 'Ihe terminals of the straight portion are formed into triangles standing in parallel planes at right angles to the length of the straight portion. Each triangle comprises a horizontal arm 4 passing inwardly over the convolution, an inner arm 5 passing thence down behind the wire 2, and an outer arm 6 passing thence up outside the wire and convolution. Said arms 6 terminate at their extreme ends in hooked portions 7, which latter are deiiected laterally out of the plane of the triangles and bent by the forming die so as to hook over the straight portion, as best shown in Fig. 2.

The triangular loops of the clip thus completely encircle and securely clamp to gether a convolution of the spring and the supporting wire, the hooked terminal 7 of the loop positively preventing the loop from opening when the convolution of the spring is expanded by compression.

In applying the clip to a spring the convolution is inserted between the terminal 7 and straight portion 3 and the clip rotated to the position shown by dotted lines in Fig. il. The forming die is then applied to the clip and operates to direct the hooked terminal 7 back over the straight portion so that the loop tightly binds the convolution and supporting wire together, after which the die bends the terminals to partially embrace the straight portion 3 and the loop is rigidly held from opening.

It will be seen that a clip of this kind may be applied to any spring and will not be mutilated, nor will it mutilate either the convolution or supporting wire when being driven to operative position, as no port-ion of the clip extends between the convolution and supporting wire.

It will further be seen that the terminals 7 of the clip being partially bent around the straight portion of the clip will be held against projecting beyond the horizontal plane of the straight portion so that there will be no tendency for the terminals to Work through the fabric covering of the cushion.

F rom the foregoing description, taken in connection with the accompanying drawing, it is thought that the construction and operation of my invention will be easily understood without a more extended explanation.

What is claimed is:

The combination with a cushion spring and supporting wire, of a clip consisting of a single length of wire having a straight portion to extend along a convolution of the spring, the terminals of said straight portion being formed into triangular loops standing in parallel planes at right angles to the length of said portion and adapted to embrace and clamp together said convolution and supporting wire, the extreme end of each loop being deflected out of the plane of its loop and hooked over the straight portion to prevent the loop from opening.

In testimony that I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of two witnesses.

EMIL HAHN.

Witnesses:

A. F. COOPER, BERNHARD HAI-IN. 

